Project description:Transcriptome analysis reveals the response mechanism of Frl-mediated resistance to Fusarium oxysporum f. sp. radicis-lycopersici (FORL) infection in tomato
Project description:Data for the manuscript: Genomic and metabolomic analysis of the endophytic fungus Fusarium sp. VM-40 derived from the medicinal plant Vinca minor, authors: Ting He, Xiao Li, Riccardo Iacovelli, Thomas Hackl and Kristina Haslinger
Project description:We performed a comparative study to determine the proteome of extracellular vesicles (EVs) from the cotton pathogen Fusarium oxysporum f. sp. vasinfectum (Fov), recovered from two growth conditions in vitro. Label-free quantitative protemics was used to find significant enrichment of proteins between EV samples, the secretome (secreted-soluble proteins) and the cell lysate. Our results show that some proteins were exclusive to EVs and were upregulated compared to the secretome or cell lysate.
Project description:Upon exposure to unfavorable environmental conditions, plants need to respond quickly to maintain their homeostasis. For instance, physiological, biochemical and transcriptional changes occur during plant-pathogen interaction. In the case of Vanilla planifolia Jacks., a worldwide economically important crop, it is susceptible to Fusarium oxysporum f. sp. vanillae. This pathogen causes root and stem rot in vanilla plants that lead to plant death. To investigate how vanilla plants, respond at the transcriptional level upon infection with F. oxysporum f. sp. vanillae, here we employed the RNA-Seq approach to analyze the dynamics of whole-transcriptome changes during two-time frames of the infection. Analysis of global gene expression profiles indicated that the major transcriptional change occurred at 2 dpi, in comparison to 10 dpi. Whereas 3420 genes were found with a differential expression at 2 dpi, only 839 were identified at 10 dpi. The analysis of the transcriptional profile at 2 dpi suggests that, among other responses, vanilla plants prepare to counter the infection by gathering a pool of translational regulation-related transcripts. The screening of transcriptional changes of V. planifolia Jacks upon infection by F. oxysporum f. sp. vanillae provides insights into the plant molecular response, particularly the upregulation of ribosomal proteins at early stages. Thus, we propose that the plant-pathogen interaction between V. planifolia Jacks and F. oxysporum f. sp. vanillae causes a transcriptional reprogramming coupled with a translational regulation. Altogether, this study provides the identification of molecular players that could help to fight the most damaging disease of vanilla.
Project description:Tandem Mass Tag (TMT)-based quantitative proteomic analysis of tomato soil borne pathogen Fusarium oxysporum f. sp. radicis-lycopersici growth, and metabolism when treated with plant natural volatile organic compounds linalool. The Forl strain was cultured on PDA supplied with 0.8 mL/L linalool for 6 days at 25°C. The fungal strain on PDA supplied with only 0.1% Tween80 was cultured as the control. Three biological replicates were established for each treatment.
Project description:Several fungi have been reported to form intimate bonds with plants. These close mutual relationships can provide physiological benefits to the interacting organisms, including the improvement of nutrient assimilation or enhanced stress tolerance. The root-colonizing fungus Fusarium sp. strain K-23 is known to successfully colonize tomato roots. Previous studies highlighted the promotion of plant biomass production and stress tolerance of tomato plants infected with the K-23. However, up to data, nothing is known about the effect of this fungus on the model plant Arabidopsis thaliana. We here report the comparative analysis of the effect of mock- and K-23-infected wild-type Arabidopsis plants (Col-0) in the abscence and presence of moderate salt stress conditions (50 mM NaCl). Our data provide evidence for a profound effect of K-23 on root hair elongation through the activation of a regulatory network that includes several plant hormones. Intriguingly, the fungus suppresses gibberellic acid biosynthesis which, in turn, promotes root hair elongation.
